Special K is a versatile utility for PC gaming that enhances gameplay across various titles. It features a frame rate limiter that improves consistency, surpassing Nvidia's built-in limiter in minimum frame rates during tests. Special K allows users to force games into borderless or exclusive fullscreen modes, enable Nvidia Reflex, adjust DLSS settings, and link input devices to specific applications. It also addresses HDR support issues by enabling HDR injection in games that lack native support, with extensive customization options for HDR settings. Originally developed to fix problems in PC ports like Fallout 4 and Batman: Arkham Knight, it has evolved to optimize a wide range of games, including Elden Ring, Monster Hunter: World, and Final Fantasy VII Remake. Special K has limitations with online games due to anti-cheat concerns but is highly applicable for single-player titles. The introduction of the SKIF GUI has made it more accessible for users.